Combined Antioxidant Therapy on Oxidative Stress in Aqueous and Vitreous Humor of Diabetic Retinopathy Patients

• Status: Recruiting
• Trial end date: 2022-01-01
• Target enrollment: 0
• Participant gender: All

Summary

The present study aims to support previous research on the effects of antioxidant therapy on the outcome of diabetic retinopathy and local oxidative stress values. The researchers intend to evaluate 56 patients with proliferative diabetic retinopathy undergoing the vitrectomy procedure, who will be assigned to a placebo group or combination antioxidant therapy. Each group will receive the intervention for 2 months. This intervention consists of taking one tablet (placebo or antioxidant therapy) orally, once a day.

At the beginning of the study, only blood samples will be collected to evaluate the state of oxidative and metabolic stress at a systemic level. After 2 months of intervention, blood samples will be taken again on the day of the intervention, adding the samples of aqueous and vitreous humor obtained during the vitrectomy. The results obtained between both groups and the different analysis matrices will be compared.

• Phase: Phase 2
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: University of Guadalajara
• Collaborator: Hospital Civil de Guadalajara
• Treatments: Antioxidants

Criteria

Inclusion Criteria:

• Patients with type 2 with proliferative diabetic retinopathy

• Blood pressure under 160/100 mmHg

• HbA1c equal or lower than 9%

• LDL under 190mg/dl, triglycerides under 500mg/dl)

• Signed informed consent

• Patients scheduled for vitrectomy surgery, under the following indications:

• Severe vitreous hemorrhage lasting 1-3 months or longer, which does not go away spontaneously

• Rhegmatogenous or tensile retina detachment

• Epiretinal membrane that involves macula and that includes vitreomacular traction

Exclusion Criteria:

• Vitreous hemorrhage for any cause other than Proliferative Diabetic Retinopathy complication

• Patients with vitrectomy surgery in the last 6 months

• Patients with laser surgery in the last 6 months

• Intravitreal application of antiangiogenic agents in the last 2 months

• Patients with other ocular pathologies such as age-related macular degeneration, glaucoma, endophthalmitis, conjunctivitis of any etiology, severe lacrimal film dysfunction syndrome, etc.

• Patients with concomitant systemic diseases such as: rheumatoid arthritis, sjogren's syndrome, upper respiratory tract infections, gastrointestinal infections, sepsis, any infectious process

• Patients with severe cardiovascular disease (myocardial infarction, stroke, severe peripheral vascular disease)

• Oral antioxidant intake that exceeds the daily recommendations in the last 6 months.

• Consumption of pharmacological agents such as: immunomodulators, biological, anti-inflammatory, in the last 3 months

• Smokers

• Patients with neurodegenerative or carcinogen processes

• Patients who are currently participating in other clinical trials